CVE-2022-26495

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://lists.debian.org/debian-lts-announce/2022/03/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/nbd/2022/01/msg00037.htmlExploit, Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZHR73XMAJTCFGKUZRXVTZKCK2X3IFNA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PU5JFD4PEJED72TZLZ5R2Q2SFXICU5I5/
https://security.gentoo.org/glsa/202402-10
https://sourceforge.net/projects/nbd/files/nbd/Product, Release Notes, Third Party Advisory
https://www.debian.org/security/2022/dsa-5100Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/nbd/2022/01/msg00037.htmlExploit, Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZHR73XMAJTCFGKUZRXVTZKCK2X3IFNA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PU5JFD4PEJED72TZLZ5R2Q2SFXICU5I5/
https://security.gentoo.org/glsa/202402-10
https://sourceforge.net/projects/nbd/files/nbd/Product, Release Notes, Third Party Advisory
https://www.debian.org/security/2022/dsa-5100Third Party Advisory

Timeline

Published: Mar 6, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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